One worker complained of a “big interruption” in chocolate production, and predicted the night’s work would have to be redone.

“They’re bringing a lot of water into the factory to extinguish the fire, that’s a no-no,” said Sherman Bramlett, a maintenance mechanic at Blommer Chocolate for three years. “This is going to contaminate the chocolate.”

“Early this morning Blommer’s Chicago plant experienced a small fire in the cocoa milling area,” according to a statement from Peter Blommer, COO of the chocolate company. “The fire was quickly extinguished by the Chicago Fire Department and thankfully no one was injured.”

“At this time, we have stopped all plant operations to conduct a thorough assessment of the impacted areas and begin the necessary clean up. Once our investigation into the cause of the fire is complete, we will take all necessary steps to ensure the safety of our employees and the quality of our chocolate,” Blommer said.

West Kinzie Street was closed between North Desplaines and North Clinton streets for more than an hour Tuesday morning.